Something Nassim Nicholas Taleb says in The Black Swan on page 194 raises the question whether we are all on the autism spectrum in some sense:

This mental block about the future has not yet been investigated and labeled by psychologists, but it appears to resemble autism…. Autistic people cannot put themselves in the shoes of others, cannot view the world from their standpoint…. Interestingly, autistic subjects, regardless of their “intelligence,” also exhibit an inability to comprehend uncertainty.

Just as autism is called “mind blindness,” this inability to think dynamically, to position oneself with respect to a future observer, we should call “future blindness.”

To me this raises the question whether in some respect we are all on the “autism spectrum,” but that those we diagnose as autistic are at the extreme in exhibiting a disability shared by all.